CN115121552B - Wire circumferential laser cleaning device - Google Patents
Wire circumferential laser cleaning device Download PDFInfo
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- CN115121552B CN115121552B CN202210229030.4A CN202210229030A CN115121552B CN 115121552 B CN115121552 B CN 115121552B CN 202210229030 A CN202210229030 A CN 202210229030A CN 115121552 B CN115121552 B CN 115121552B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
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Abstract
The invention relates to a wire circumferential laser cleaning device which comprises a laser cleaning head, an anti-laser reflection cavity, a reflector base and a reflector, wherein the laser cleaning head is arranged on the reflector base; the laser cleaning head is arranged above the anti-laser reflecting cavity and used for emitting and cleaning the light source, the at least one reflector base is rotatably connected to the anti-laser reflecting cavity, and the reflector is arranged on the reflector base and used for reflecting and cleaning the light source to the wire. The wire circumferential laser cleaning device aims to solve the problem that when a welding wire is cleaned by laser, the efficiency is low because the welding wire cannot be cleaned in a circumferential full-coverage mode.
Description
Technical Field
The invention relates to the technical field of laser processing cleaning, in particular to a wire circumferential laser cleaning device.
Background
Welding wire is a filler means often used in the welding field. When aviation and aerospace structural parts are welded, the welding wire is widely used as an indispensable filling mode. Before the welding wire is used, in order to avoid secondary pollution and ensure high quality of welding, the welding wire needs to be subjected to surface treatment to remove oil stains, oxide layers and other magazines on the surface. The general welding wire is peeled off or pickled before the commodity leaves the factory, and the surface oxide layer and the greasy dirt are removed. For the welding wire wound into the coil, the welding wire cannot be wound into the coil after being pickled by self because special wire winding equipment is lacked after the unit purchase is used, so that the surface treatment is not generally carried out after the welding wire purchase, and the welding wire is directly used for welding. The surface of the welding wire can be oxidized in the air for a long time to generate an oxide film, and the welding quality is directly affected. Particularly, the requirements on the quality and mechanical properties of welding seams of aviation welding parts are extremely high, so that the long-term welding wire is a technical problem in aviation product welding in terms of cleaning the surface before welding without damaging the original winding wire state.
In the laser cleaning technology developed in recent years, the surface of a workpiece is irradiated by a high-energy laser beam (the instantaneous peak maximum power can reach megawatt level), so that dirt, rust spots or a coating on the surface is instantaneously evaporated or stripped, and a clean process is achieved. At present, laser cleaning in the prior art cannot enable the surface of the annular part to be covered completely by laser irradiation, so that the surface of the annular part cannot be cleaned completely at one time.
The current developed laser cleaning technology is limited by the laser irradiation surface, so that the part cannot be cleaned in a full-coverage mode in the circumferential direction when the part is cleaned in the circumferential direction by laser cleaning. Therefore, when the welding wire is cleaned by laser cleaning, the surface of the welding wire can be covered at all angles only by multi-angle cleaning, and the efficiency is extremely low. Therefore, conventional laser cleaning techniques are difficult to apply when cleaning welding wires.
Accordingly, the inventors provide a wire hoop laser cleaning device.
Disclosure of Invention
(1) Technical problem to be solved
The embodiment of the invention provides a wire circumferential laser cleaning device, which solves the technical problem of low efficiency caused by incapability of circumferential full-coverage cleaning of welding wires when the welding wires are cleaned by laser.
(2) Technical proposal
The invention provides a wire circumferential laser cleaning device which comprises a laser cleaning head, an anti-laser reflection cavity, a reflector base and a reflector, wherein the laser cleaning head is arranged on the reflector base;
the laser cleaning head is arranged above the anti-laser reflecting cavity and used for emitting a cleaning light source, at least one reflector base is rotatably connected with the anti-laser reflecting cavity, and the reflector is arranged on the reflector base and used for reflecting the cleaning light source to the wire.
Further, the wire circumferential laser cleaning device further comprises a plurality of groups of rotating connecting mechanisms arranged at the end parts of the anti-laser reflecting cavities, and the two reflector bases are rotatably connected with the anti-laser reflecting cavities through the corresponding rotating connecting mechanisms respectively.
Further, the rotating connection mechanism comprises a reflecting cavity rotating shaft, a first connecting rod, a connecting shaft, a second connecting rod and an electric reflecting mirror rotating shaft;
one end of the first connecting rod is rotationally connected to the anti-laser reflecting cavity through the reflecting cavity rotating shaft, the other end of the first connecting rod is rotationally connected to one end of the second connecting rod through the connecting shaft, and the other end of the second connecting rod is rotationally connected to the reflecting mirror base through the electric reflecting mirror rotating shaft.
Further, the reflecting mirror forms an included angle of 30-60 degrees with the horizontal plane.
Further, the rotation angle of the reflector base is 10-20 degrees.
Further, the reflector base dissipates heat of the reflector through a water cooling mode.
Further, the reflector base comprises an annular hollow cavity, a water cooling device water inlet and a water cooling device water outlet, wherein the annular hollow cavity is formed in the reflector base, and the water cooling device water inlet and the water cooling device water outlet penetrate through the reflector base and are communicated with the annular hollow cavity.
Further, the wire circumferential laser cleaning device further comprises a dust removing device, and the dust removing device is used for removing dust.
Further, the wire circumferential laser cleaning device further comprises an online detection device, and the online detection device is used for detecting the cleaning state of the welding wire in real time.
Further, the line detection device comprises a CCD camera, an infrared thermometer and a surface roughness meter, wherein the CCD camera, the infrared thermometer and the surface roughness meter are all installed in the anti-laser reflection cavity and face the wire.
(3) Advantageous effects
In summary, the invention adopts the reflective design of the double-sided laser reflector and the rotary design of the electric reflector, and the reflector base can do reciprocating rotary motion at high speed under the drive of the micro motor, so that the angle adaptability of the laser irradiation surface is better. The laser can be enabled to act on the circumferential full position of the wire, so that the circumferential direction of the wire is cleaned at one time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a wire circumferential laser cleaning device according to an embodiment of the present invention;
FIG. 2 is a front view of a mirror base in a wire hoop laser cleaning device according to an embodiment of the present invention;
FIG. 3 is a top view of a mirror base in a wire hoop laser cleaning device according to an embodiment of the present invention;
fig. 4 is an application scenario diagram of a wire circumferential laser cleaning device provided by an embodiment of the present invention.
In the figure:
1-cleaning a head by laser; 2-an anti-laser reflection cavity; 3-a reflective cavity spindle; 4-a first connecting rod; 5-connecting shaft; 6-a second connecting rod; 7-an electric reflector rotating shaft; 701-an electric mirror motor; 8-a mirror base; 801-an annular hollow cavity; 802-water cooling device water inlet; 803-a water outlet of the water cooling device; 9-a mirror; 10-wire; 11-cleaning the light source; 12-a dust removal device; 13-an online detection system; 14-welding system.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the invention.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic structural diagram of a wire circumferential laser cleaning device according to an embodiment of the present invention, where the device may include a laser cleaning head 1, an anti-laser reflection cavity 2, a reflector base 8, and a reflector 9; the laser cleaning head 1 is arranged above the anti-laser reflection cavity 2 and is used for emitting a cleaning light source 11, at least one reflector base 8 is rotatably connected to the anti-laser reflection cavity 2, and a reflector 9 is arranged on the reflector base 8 and is used for reflecting the cleaning light source 11 to the wire 10.
In the above embodiment, aiming at the characteristics that the laser cleaning technology cannot enable the welding wire to be cleaned in a circumferential full coverage manner when the welding wire is cleaned, the surface of the welding wire can be covered in a full angle manner only by cleaning at multiple angles, the efficiency is low, and the like, the specific welding wire laser cleaning device is designed, the circumferential full coverage cleaning of the welding wire can be realized once, and the wire cleaning process is remarkably simplified.
As shown in FIG. 1, the mirror base 8 can reciprocate at a high speed under the drive of a micro motor by adopting a double-sided laser mirror reflection design and an electric mirror rotation design, so that the angle adaptability of the laser irradiation surface is better. The laser can be enabled to act on the circumferential full position of the wire, so that the circumferential direction of the wire is cleaned at one time.
The anti-laser reflection cavity 2 is used as a carrier, is connected with the reflection cavity rotating shaft 3 and plays a role in preventing laser scattering and protecting, and the main material of the anti-laser reflection cavity is brass 62.
The electric mirror rotation shaft 7 is driven by a miniature electric mirror motor 701, so that the mirror base 8 can make high-speed reciprocating rotation motion around the electric mirror rotation shaft 7 by a rotation angle of + -45 degrees. The main material is made of brass 62.
The reflector base 8 is used as a carrier of the reflector 9, a water cooling design is adopted, a water cooling device water inlet 801 and a water cooling device water outlet 802 of the reflector base 8 can dissipate heat of the reflector 9, and meanwhile, the reflector base 8 can do reciprocating rotary motion around the electric reflector rotating shaft 7 at a high speed under the driving of the miniature electric reflector motor 701, and the main material is brass 62.
The reflecting mirror 9 is mainly made of red copper coating film and is used for cleaning the reflection of the light source, and the laser reflectivity is more than 99.8%.
The cleaning light source 11 can adopt a 300W laser source with the wavelength of 1064nm, the pulse width of 130ns and the laser frequency of 5-50 KHz being adjustable.
In some alternative embodiments, the wire circumferential laser cleaning device further includes a plurality of sets of rotational connection mechanisms disposed at the ends of the anti-laser reflection cavity 2, and the two mirror bases 8 are rotatably connected to the anti-laser reflection cavity 2 through corresponding rotational connection mechanisms, respectively.
In some alternative embodiments, as shown in fig. 1, the rotating connection mechanism includes a reflective cavity rotating shaft 3, a first connecting rod 4, a connecting shaft 5, a second connecting rod 6, and an electric mirror rotating shaft 7;
one end of the first connecting rod 4 is rotationally connected to the anti-laser reflecting cavity 2 through the reflecting cavity rotating shaft 3, the other end of the first connecting rod 4 is rotationally connected to one end of the second connecting rod 6 through the connecting shaft 5, and the other end of the second connecting rod 6 is rotationally connected to the reflecting mirror base 8 through the electric reflecting mirror rotating shaft 7.
Specifically, the main function of the reflecting cavity rotating shaft 3 is to enable the connecting rod 4 to rotate and adjust the angle of the connecting rod 4, and the main material of the reflecting cavity rotating shaft is brass 62.
The first connecting rod 4 is mainly used for connecting the reflecting cavity rotating shaft 3 and the connecting shaft 5, and is mainly made of brass 62.
The connecting shaft 5 mainly functions to enable the connecting rod 6 to rotate and adjust the angle of the connecting rod 6. The main material is brass 62.
The second connecting rod 6 mainly aims at connecting the connecting shaft 5 with the rotating shaft 7 of the reflecting mirror, and is mainly made of brass 62.
In some alternative embodiments, the mirror 9 is angled from 30 ° to 60 ° from the horizontal. Among them, 45 ° is preferable, and it can be ensured that the reflected laser light can cover the welding wire entirely.
In some alternative embodiments, the mirror base 8 is rotated at an angle of 10 to 20. Of these, 15 ° is preferable, and it is ensured that the reflected laser light can cover the welding wire entirely.
In some alternative embodiments, the reflector base 8 dissipates heat from the reflector 9 by means of water cooling. Wherein, the mode of water cooling carries out the heat dissipation can save the cost to the radiating effect is good.
In some alternative embodiments, as shown in fig. 2-3, the reflector base 8 includes an annular hollow cavity 801, a water cooling device water inlet 802, and a water cooling device water outlet 803, the annular hollow cavity 801 is formed inside the reflector base 8, and the water cooling device water inlet 801 and the water cooling device water outlet 802 both penetrate through the reflector base 8 and are communicated with the annular hollow cavity 801.
Specifically, the reflector base 8 has a hollow structure, cooling water is stored in the reflector base, enters the annular hollow cavity 801 through the water inlet 802 of the water cooling device, flows out through the water outlet 803 of the water cooling device during replacement, adopts a mechanical processing to form an inner groove, and adopts a brazing mode to seal the reflector base to prevent water leakage.
In some alternative embodiments, the wire hoop laser cleaning device further comprises a dust removal device 12, the dust removal device 12 being configured to remove dust. Wherein, the power of the dust removing device 12 is 500W, the suction force is 1-50L/s, and the dust removing device is mainly used for removing dust generated in the laser cleaning operation process and preventing dust from polluting the laser cleaning head and the reflecting lens.
In some alternative embodiments, the wire circumferential laser cleaning device further comprises an online detection device 13, and the online detection device 13 is used for detecting the cleaning state of the welding wire in real time.
In some alternative embodiments, the wire detection device 13 includes a CCD camera, an infrared thermometer, and a surface roughness meter, all mounted in the anti-laser reflection cavity 2 and facing the wire 10.
Specifically, the wire detector 13 can detect the surface temperature, surface roughness, and oxide layer removal state of the welding wire.
When the welding wire needs to be cleaned in the welding process, the welding wire cleaning flow is as follows:
s1, when welding wires are subjected to laser cleaning, the connecting rods 4, the connecting rods 6 and the reflector base 8 are adjusted, so that the reflector base is in an open state, and wires are conveniently placed in a reflecting area;
s2, arranging the welding wire 10 in the reflecting area;
s3, adjusting the reflecting angle of the reflector base 8 to form an included angle of 45 degrees with the horizontal plane, so that the welding wire can be covered by the reflected laser in a whole range;
s4, setting laser cleaning parameters, wherein the power is 200W, the laser frequency is 45KHz, the scanning speed is 8000mm/S, the wire feeding speed is 3m/min, the reciprocating frequency of the rotating shaft 7 of the reflecting mirror is 100 times/min, and the rotation angle is 15 degrees;
s5, starting the dust removing device 12;
s6, starting an online detection system 13, and detecting the surface roughness, temperature and oxide layer removal condition of the welding wire in the cleaning process;
s7, starting welding wire cleaning operation;
s8, detecting the welding wire cleaning process in real time by the on-line detection system 13, and transmitting the welding wire to the welding system 14 (shown in fig. 3) for welding through the wire feeding system when the surface roughness, the oxide layer and the temperature meet the requirements. When the detection is unqualified, cleaning and detecting again until the requirements are met;
s9, after the welding wires are cleaned, the welding wires are transmitted to a welding system through a wire feeding system for welding.
Examples
Made of brass 62 material, one of the anti-laser reflection cavities 2 is a reflection cavity. The two rotating shafts 3, the two connecting rods 4, the two connecting shafts 5, the two connecting rods 6, the two electric reflector rotating shafts 7, the two reflector bases 8, the two reflector 9 manufactured by coating film with red copper, and the online detection device 13 composed of a CCD camera, an infrared thermometer and a surface roughness meter.
The water cooling device adopts a same-flight MCW-10 type water cooling machine to cool a water cooling ring of the laser reflector base 8, and the laser cleaning light source adopts a Ruike 300W nanosecond laser with a pulse width of 130ns and a frequency of 5-50 KHz.
The welding wire feeder adopts a Funius wire feeder, a Ruike 4000W laser is adopted as a welding light source, a HIGYAG welding head is used for filling wire welding, and a welding wire adopts TC4 brand phi 1.0mm diameter.
Welding wire cleaning verification 1
Setting the wire feeding speed to 3m/min, setting the laser cleaning power to 300W, setting the laser frequency to 45KHz, setting the scanning speed to 8000mm/s, setting the reciprocating frequency of the rotating shaft 7 of the electric reflector to 100 times/min, and rotating the rotating shaft by 15 degrees. After the welding wire is cleaned, the omnidirectional surface of the welding wire presents bright white metallic luster, and the surface is smooth and has no ablation and pits.
1.5mM Tc4 plate is used as a welding plate, filler wire welding is carried out, the welding power is set to 3000W, the welding speed is 2.5m/min, and the welded plate meets the I-level welding seam standard in HB/Z20017 through X-ray flaw detection. The system parameters formed by the wire cleaning process are shown in table 1.
TABLE 1 wire cleaning System parameters
Welding wire cleaning verification 2
Setting the wire feeding speed to 2.5m/min, setting the laser cleaning power to 250W, setting the laser frequency to 40KHz, setting the scanning speed to 7000mm/s, setting the reciprocating frequency of the rotating shaft 7 of the electric reflector to 80 times/min, and rotating the rotating shaft by 15 degrees. After the welding wire is cleaned, the omnidirectional surface of the welding wire presents bright white metallic luster, and the surface is smooth and has no ablation and pits.
1.5mM Tc4 plate is used as a welding plate, filler wire welding is carried out, the welding power is set to 3000W, the welding speed is 2.5m/min, and the welded plate meets the I-level welding seam standard in HB/Z20017 through X-ray flaw detection. The system parameters formed by the wire cleaning process are shown in table 2.
TABLE 2 wire cleaning System parameters
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. The invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known method techniques is omitted here for the sake of brevity.
The foregoing is merely an example of the present application and is not limited to the present application. Various modifications and alterations of this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (8)
1. The wire circumferential laser cleaning device is characterized by comprising a laser cleaning head (1), an anti-laser reflection cavity (2), a reflector base (8) and a reflector (9);
the laser cleaning head (1) is arranged above the anti-laser reflection cavity (2) and is used for emitting a cleaning light source (11), at least one reflector base (8) is rotatably connected to the anti-laser reflection cavity (2), and the reflector (9) is arranged on the reflector base (8) and is used for reflecting the cleaning light source (11) to the wire (10);
the anti-laser reflection mirror comprises a reflection mirror base (8) and is characterized by also comprising a plurality of groups of rotation connecting mechanisms arranged at the end parts of the anti-laser reflection cavities (2), wherein the two reflection mirror base are respectively and rotatably connected with the anti-laser reflection cavities (2) through corresponding rotation connecting mechanisms;
the rotating and connecting mechanism comprises a reflecting cavity rotating shaft (3), a first connecting rod (4), a connecting shaft (5), a second connecting rod (6) and an electric reflecting mirror rotating shaft (7);
one end of the first connecting rod (4) is rotationally connected to the anti-laser reflection cavity (2) through the reflection cavity rotating shaft (3), the other end of the first connecting rod (4) is rotationally connected to one end of the second connecting rod (6) through the connecting shaft (5), and the other end of the second connecting rod (6) is rotationally connected to the reflector base (8) through the electric reflector rotating shaft (7).
2. The wire circumferential laser cleaning device according to claim 1, wherein the reflecting mirror (9) forms an angle of 30-60 ° with the horizontal plane.
3. The wire circumferential laser cleaning device according to claim 1, characterized in that the mirror base (8) has a rotation angle of 10 ° to 20 °.
4. The wire circumferential laser cleaning device according to claim 1, wherein the reflector base (8) dissipates heat of the reflector (9) by means of water cooling.
5. The wire circumferential laser cleaning device according to claim 4, wherein the reflector base (8) comprises an annular hollow cavity (801), a water cooling device water inlet (802) and a water cooling device water outlet (803), the annular hollow cavity (801) is formed in the reflector base (8), and the water cooling device water inlet (802) and the water cooling device water outlet (803) penetrate through the reflector base (8) and are communicated with the annular hollow cavity (801).
6. The wire circumferential laser cleaning device of claim 1, further comprising a dust removal device (12), the dust removal device (12) being configured to remove dust.
7. The wire circumferential laser cleaning device according to claim 1, further comprising an on-line detection device (13), wherein the on-line detection device (13) is used for detecting the cleaning state of the welding wire in real time.
8. The wire circumferential laser cleaning device according to claim 7, wherein the wire detection device (13) comprises a CCD camera, an infrared thermometer and a surface roughness meter, which are mounted in the anti-laser reflection cavity (2) and are directed towards the wire (10).
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| CN202210229030.4A CN115121552B (en) | 2022-03-08 | 2022-03-08 | Wire circumferential laser cleaning device |
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